So I figured I would add to it and stir up the pot. A lot has changed since those early 300s were made. While I did seize mine last summer it was not because of any flaws in the design of the set up...it was my own fault plain and simple. I'm pretty sure had I checked that dang oil reservoir filter after each outing I'd still be running around without issues.
My latest rebuild allowed me to integrate some technology into the bike that I haven't read of anyone doing. My crankshaft now has ceramic hybrid end bearings which I am 100% certain have reduced the friction allowing for more power to the rear wheel. I had put ceramic hybrids in the transmission on my prior rebuild. Although I am running a 300 kit, I am sure the benefits would be seen on a 250. Because of the design of the center bearing it looks to be a challenge to convert it to a ceramic hybrid. But I did notice there is a firm that has built a labyrinth seal for our bikes. Had I seen that before rebuilding my crank, there would have been one in the bike and the center bearing could then have been made into a hybrid ceramic
My point...well, I don't really have one. Just happy to have my bike running again.
